Question

Help pls .................................................................pls

Answer 1

r=3.25

Explanation:

`16(1)/(2) = (22)/(7) (r + 2)`

`(33)/(2) = (22)/(7) (r + 2)`

`231 = 44(r + 2)`

`231 = 44r + 88`

`143 = 44r`

`3.25 = r`

Answer 2

`r = 3 (1)/(4)`

Explanation:

Given:

h = 2

U = 16,5

`u = \pi(r + h)`

`(22)/(7) (r + 2) = 16.5`

Multiply both sides of the equation by 7 to eliminate the fraction:

`22(r + 2) = 115.5`

Expand the brackets:

`22r + 44 = 115.5`

Collect like-terms:

`22r = 71.5`

Divide both sides of the equation by 22 to make r the subject:

`r = 3.25 = 3 (1)/(4)`